9beta,11beta-Epoxy-17,21-dihydroxypregna-1,4-diene-3,20-dione CAS 7091-05-6
| CAS No. | 7091-05-6 |
| Molecular Formula | C21H26O5 |
| Molecular Weight | 358.43 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 9beta,11beta-Epoxy-17,21-dihydroxypregna-1,4-diene-3,20-dione.
9beta,11beta-Epoxy-17,21-dihydroxypregna-1,4-diene-3,20-dione (CAS 7091-05-6), molecular formula C21H26O5 and molecular weight 358.43 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 9beta,11beta-Epoxy-17,21-dihydroxypregna-1,4-diene-3,20-dione (C21H26O5) is characterized by a flavonoid core, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 9beta,11beta-Epoxy-17,21-dihydroxypregna-1,4-diene-3,20-dione meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C21H26O5 |
| Molecular Weight | 358.43 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1959 |
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